César E. Chávez National MonumentvsEffigy Mounds National Monument
Effigy Mounds National Monument has a higher Total Area (2,526 vs 117 acres), while Effigy Mounds National Monument has a higher Annual Visitors (2025) (56,912 vs 31,497 visitors), while Effigy Mounds National Monument has a higher Longitude (-91 vs -119 °).
Location & Classification
National Monument
Designation
National Monument
CA
State(s)
IA
35
Latitude
43
-119
Longitude
-91
Size & Visitation
117
Total Area
2,526
31,497
Annual Visitors (2025)
56,912
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Data sourced from NPS Boundary & Tract Data Service (US Government (public domain)), NPS Visitor Use Statistics (2025) (CC0 (public domain)), NPS Acreage Report (Q1 2026) (US Government (public domain)).